EP 2992032 B1 20171206 - PROCESS FOR PREPARING POLYCARBONATES BY POLYMERIZATION OF FIVE-MEMBERED-RING CYCLIC CARBONATES
Title (en)
PROCESS FOR PREPARING POLYCARBONATES BY POLYMERIZATION OF FIVE-MEMBERED-RING CYCLIC CARBONATES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON POLYCARBONATEN DURCH POLYMERISATION VON CYCLISCHEN CARBONATEN MIT FÜNFGLIEDRIGEM RING
Title (fr)
PROCÉDÉ DE PRÉPARATION DE POLYCARBONATES PAR POLYMÉRISATION DE CARBONATES CYCLIQUES À NOYAU PENTAGONAL
Publication
Application
Priority
- EP 13290095 A 20130429
- EP 2014058716 W 20140429
- EP 14721328 A 20140429
Abstract (en)
[origin: WO2014177558A1] The invention relates to a process for the preparation of polycarbonates. In particular the invention relates to a process for the preparation of polycarbonates or copolymers thereof, by ring-opening polymerization of five-mem bered cyclic carbonates, said process comprises the step of homo- or copolymerizing in the presence of at least one catalyst, one or more compounds of formula (I), stereoisomers, racemics, or mixtures thereof; optionally with one or more cyclic esters, stereoisomers, racemics, or mixtures thereof; wherein each dotted bond "a" and "b" are a solid bond, a wedged bond, or a hashed wedged bond; and R21 and R22 taken together with the carbon atoms 4 and 5 of the cyclic carbonate form a ring selected from C5-9cycloalkylene, C5-9cycloalkenylene, and C6-12arylene, said ring being optionally substituted with one or more substituents each independently selected from halo, hydroxyl, C1-6alkyl, haloC1-6alkyl, C1-6alkoxy, haloC1-6alkoxy, C6-12aryl, C1-6alkylthio, carboxyl, C1-6 alkoxycarbonyl, C1-6alkylcarbonyloxy, amino; or mono- or di-C1-6alkylamino.
IPC 8 full level
C08G 64/30 (2006.01); C07D 317/36 (2006.01)
CPC (source: EP US)
C07D 317/36 (2013.01 - EP US); C07D 317/46 (2013.01 - EP US); C08G 63/64 (2013.01 - EP US); C08G 64/30 (2013.01 - EP US); C08G 64/305 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2014177558 A1 20141106; CN 105358604 A 20160224; CN 105358604 B 20170926; EP 2992032 A1 20160309; EP 2992032 B1 20171206; ES 2661818 T3 20180404; JP 2016520689 A 20160714; JP 2019108547 A 20190704; KR 20160004368 A 20160112; US 2016068630 A1 20160310
DOCDB simple family (application)
EP 2014058716 W 20140429; CN 201480036986 A 20140429; EP 14721328 A 20140429; ES 14721328 T 20140429; JP 2016511040 A 20140429; JP 2019017816 A 20190204; KR 20157033915 A 20140429; US 201414786227 A 20140429